BEGIN_PROVIDER [ double precision, ci_overlap_psidet, (size_ci_overlap_psidet) ]
  implicit none
  BEGIN_DOC
  ! < Phi_0 | det(j) >
  !
  ! Dimensions : det_num
  END_DOC

  integer                        :: i, j, k

  do k=1,det_num
    i = det_coef_matrix_rows(k)
    j = det_coef_matrix_columns(k)
    ci_overlap_psidet(k) = det_alpha_value(i)*det_beta_value (j)*psidet_inv
  enddo

  ci_overlap_psidet_min = min(ci_overlap_psidet_min,minval(ci_overlap_psidet))
  ci_overlap_psidet_max = max(ci_overlap_psidet_max,maxval(ci_overlap_psidet))
  SOFT_TOUCH ci_overlap_psidet_min ci_overlap_psidet_max
END_PROVIDER


BEGIN_PROVIDER [ double precision, ci_h_psidet, (size_ci_h_psidet) ]
  implicit none
  BEGIN_DOC
  ! < Phi_0 | det(j) >
  !
  ! Dimensions : det_num
  END_DOC

  integer                        :: i, j, k, l
  double precision :: T, tmp

  do k=1,det_num
    i = det_coef_matrix_rows(k)
    j = det_coef_matrix_columns(k)
    T = 0.d0
    do l=1,elec_alpha_num
      T += det_alpha_grad_lapl(4,l,i)*det_beta_value (j)
    enddo
    do l=elec_beta_num+1,elec_num
      T += det_beta_grad_lapl (4,l,j)*det_alpha_value(i) 
    enddo
    ci_h_psidet(k) = -0.5d0*T + E_pot * det_alpha_value(i)*det_beta_value (j)
    ci_h_psidet(k) *= psidet_inv 
  enddo

  ci_h_psidet_min = min(ci_h_psidet_min,minval(ci_h_psidet))
  ci_h_psidet_max = max(ci_h_psidet_max,maxval(ci_h_psidet))
  SOFT_TOUCH ci_h_psidet_min ci_h_psidet_max
END_PROVIDER


BEGIN_PROVIDER [ double precision, ci_overlap_matrix, (size_ci_overlap_matrix) ]
  implicit none
  BEGIN_DOC
  ! < det(i) | det(j) >
  ! < det(i) | det(j) >
  !
  ! Dimensions : det_num
  END_DOC

  integer                        :: i, j, k, l, m, n
  double precision :: f

  do k=1,det_num
    i = det_coef_matrix_rows(k)
    j = det_coef_matrix_columns(k)
    f = det_alpha_value(i)*det_beta_value (j)*psidet_inv*psidet_inv
    do l=1,det_num
      m = det_coef_matrix_rows(l)
      n = det_coef_matrix_columns(l)
      ci_overlap_matrix(l) = det_alpha_value(m)*det_beta_value(n) * f
    enddo
  enddo

  ci_overlap_matrix_min = min(ci_overlap_matrix_min,minval(ci_overlap_matrix))
  ci_overlap_matrix_max = max(ci_overlap_matrix_max,maxval(ci_overlap_matrix))
  SOFT_TOUCH ci_overlap_matrix_min ci_overlap_matrix_max
END_PROVIDER